Cock.



MFlCFt no. veneta.

IKelpeciteation ot' Letters Patent.

Patented .d ug. l5, 1905.

To all /l/'i//rm/ it nt/tjl/ concern:

Be it known that l', JOHN' C. Srtsnr, oit .Newpor't, in the county ofSullivan and State oi New llampshire, have invented certain new anduseful Improvements in Cocks, of which the 'following is aspeci'lication.

illy present invention relates to cocks or valves, and is hereinillustrated as applied to 'what is called a stop and waste7 cock.

'lhe principal points of my present :invention consist in so forming theseveral parts making 'up the whole article, that the inner shell andconnecting-valves and appurtenances may be readily removed 'from theouter shell 5 the arrangement and peculiarities of the stop and thewaste valves to a common stem; the direct downward exit for the wastewater, and certain other improvements hereinafter set forth.

ln the drawings, Figure l represents a sectional elevation of the cockset in place in the ground. Fig. I2 is an elevation ot the :inner shellremoved 'from the outer or main shell.

In the drawings, H represents the main or outer shell secured to pipesat either side as being used for an ordinary water-hydrant cock or as anordinary stop and waste cock in a street line of pipe, 71, being theopening for the entrance of the water and c the outlet. Near the lowerend oit the said shell is 'formed an internal screw-thread e, whichcoincides with the threaded end of the inner shell near its bottom, asindicated by c. The engagement of the parts by this screw-thread servesto hold the outer and inner shells together. lhe inner shell proper isrepresented by D, and which is provided with openings .For the entranceand the exit of' the water, coinciding with the similar openings 'formedin the shell H. ln Fig. l the several parts are shown as in place withthe stop-valve closed and the waste-valve open.

A is the stem, which extends from the top to nearly the bottom. of thecock and which carries the stop-valve c, shown as seated on its seat a',and the waste-valve F, secured to the lower end of the stem andv adaptedto be seated at E by the raising of the stem. The circular top plug C issecured to the inner shell D by the screw-thread c and the top nut B tothe top plug C by the screw-thread Z). The stem passes through the nut Band is screw threaded d d to the inner part ot plug C. The wrench isapplied to the top A oi the stem and when turned. oit course raises l orlowers the stem and the valves attached to the stein.. The outside ofthe inner shell l) made to lit closely to the interior of the body ofthe shell ll. The top el the shell l) is formed like a nut (Z2, Fig. 2,so that by applying to the nut part d of the inner shell C the usualextensioli-wrench through the box A, which extends trom the cock to thesurface of the ground, the whole shell C, with all its contents, may beeasily unscrewed from the shell l'fl and removed therefrom for repair orother causes. l preferably remove a part of the stem A where it passesthrough the waste-valve section E, as indicated by ll. The object ofthis is to facilitate the ilow ol water when the waste-valve is open.Flfhen the stem. is raised in the act oi" opening the stop-valve, thelower part of the stem will substantially close the waste-valvesectiouopening E, and thus prevent the water :from the stop-valve when entering'from escaping by the waste-valve-section opening.

lt is desirable to have a ready means of removing the valve parts lorpurposes of repair or other causes from the main shell H ot the cock.The cock is often buried to a considerable depth in. the earth andsecured each side to the main system of pipes. It will. be observed thatby my form ol parts the inner shell can be readily removed from theouter shell while the latter is connected to the water-pipes in theground without removing any earth or disturbing the permanent structure.

In operation, the stop-valve a being raised, the water enters the cockat h and passes downward through the valve-opening and out at 7.1', thewaste-valve F heilig closed by the act ot raising the stem A in, openingthe stop-valve c. When the stem is screwed down, the valve (L is closed,and the wastevalve F is opened, and the waste water is removed downwardthrough the bottoni or lower end of the cock.

All parts of the cock are simple, easily made, and durable. In operationthey would not be likely to get out ot order or prove ineilective inpractical use.

l do not coniine mysell" to the special form. oi: 'parts shown or to thespecial application oiif the cock to the use illustrated, as theprinciples of my invention may be varied in form and di'llerentlyattached in use without departing Yfrom the spirit o'li my improvementsas described. For instance, the two shells may be removably securedtogether by different means, the arrangement for substantially closingthe waste-opening while the stop-valve is being opened or closed may bevaried, and other similar changes made as to details.

Having now explained my invention,what l desire to elaim and secure byLetters Patent of the United States is* l. A cock formed of the mainshell H and an inner shell D, each provided with the apertures 7L and 7;the shell D having the verti cally-moving stein A, and the valves a andF, each secured to said stem, and the valveseats a and E/ forming a partof the shell D g the depression E, in the stem, and the opening E2, ofthe valve-seat opening E the top nut B, and the top plug C, adapted tobe screwed to the shell D; the shell D, adapted to be removably screwedto the main shell H, all combined and adapted to operate, substantiallyas and for the purposes set forth.

2. A stop and waste cock, formed with an outer and an inner shell,removably screwed together, the inner shell carrying thevertically-operative spindle A, the valves L and F, valve-seats a and Ewith connecting parts and all combined and adapted to 0peratesubstantially as set forth.

3. In a cock, the combination of the outer or main shell H, and theinner shell D, carrying therein a vertically reciprocating valvemechanism consisting of a stop-valve and a waste-valve, each having avalve-seat, formed with the inner shell, the two shells being internallyscrew-threaded together, so that the inner shell may readily be removedfrom the top, all substantially as set forth.

A. ln a cock, a main or outer shell, provided with an interiorscrew-thread; a seeondary or inner shell, provided with an eX- teriorscrew-thread, and also having two valve-seats, each inclosing annularopenings; and a vertically-movable stem, having two valves securedthereto, and all combined and adapted to operate substantially as setforth.

ln testimony whereof l have aixed my signature in presence of twowitnesses.

JOHN C. SILSBY.

Vitnesses:

MARY E. HoLMEs, BowDoIN S. PARKER.

